Optical film or strip waveguide having a dielectric waveguiding

Details Optical film or strip waveguide having a dielectric waveguiding Optical film or strip waveguide having a dielectric waveguiding

1990-09-09

1991-12-31

Lee, John D.

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

385 11, 385131, G02B 610

Patent

active

050778226

ABSTRACT:
In order for the waveguiding layer disposed on a substrate to handle both TE-polarized light and TM-polarized light, the arrangement includes a metal layer that is arranged close to the waveguiding layer so that the propagation speed of the TM-polarized photons (of the TE- and TM-polarized photons guided in the waveguiding layer) is reduced by the metal layer, whose thickness is selected so thin that the TE-polarized and the TM-polarized photons are still capable of propagation in the waveguiding layer. This new arrangement is particularly useful in integrated optical demultiplexers.

REFERENCES:
patent: 4695123 (1987-09-01), Chang et al.
patent: 4886332 (1989-12-01), Wolfe
patent: 4978187 (1990-12-01), Minemura et al.
Yamamoto et al., "Characteristics of Optical Guided Modes in Multilayer Metal-Clad Planar Optical Guide With Low-Index Dielectric Buffer Layer", IEEE Journal fo Quantum Electronics, vol. QE-11, No. 9, (1975), pp. 729-736.
Rollke et al., "Metal-Clad Waveguide as Cutoff Polarizer for Integrated Optics", IEEE Journal of Quantum Electronics, vol. QE-13, No. 4 (1977), pp. 141-145.
Cowan et al., "Dispersion of Surface Plasmons in Multiple Metal and Dielectric Layers on Concave Diffraction Gratings", Phys. Stat. So. (1970), pp. 695-705.
Polky et al., "Metal-Clad Planar Dielectric Waveguide for Integrated Optics", Journal of the Optical Society of America, vol. 64, No. 3 (1974), pp. 274-279.

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